11G ⅝ 11 Propeller
Product description
Propeller 11 5/8 × 11-G offers a combination of strong acceleration, economical cruising speed, and long-lasting durability in the corrosive marine environment. If you’re looking to noticeably improve the performance of your 50 hp boat at a reasonable cost, this model is a reliable choice.
Product Summary:
1. The 11 5/8 × 11-G propeller is designed for Yamaha 50 hp engines and delivers optimal performance on recreational and fishing boats.
2. With a diameter of 11 5/8 inches and a pitch of 11-G, it provides quicker initial acceleration compared to the 12-G model, while still maintaining economical cruising speed.
3. Made of high-pressure cast aluminum with a dual-layer coating, it offers excellent resistance to saltwater corrosion.
4. The stable operating RPM is 2200, and it performs without cavitation up to around 5500 RPM.
5. The optimal boat speed is between 20 to 30 mph; within this range, the engine’s fuel consumption is minimized.
Technical specifications
| Feature | Value / Description |
|---|---|
| Model | 11 5/8 × 11-G |
| Compatible Engine | Yamaha 50 HP (4-stroke – Maximum RPM up to 5500) |
| Propeller Diameter | 11 5/8 inches |
| Pitch | 11-G (For higher acceleration and balanced cruising speed) |
| Recommended Operating RPM | 2200 rpm (Stable) |
| Optimal Speed on Water | 20 – 30 mph |
| Material | High-pressure cast aluminum with dual anti-corrosion coating |
| Application | Recreational boats, light fishing, utility use ≤ 1 ton load |
| Resistance | Resistant to corrosion and sand abrasion |
| Warranty | 12 months |
All figures are based on factory tests conducted on a 5.4-meter fiberglass boat with 3 crew members and 50 kg of lateral load.
Key technical specifications
Torque
86 Nm
Power
4600-5100 RPM
Material
Aluminium
Flexibility
205 MPa
Endurance
4800 RPM In 150h
Motor Horsepower
50 HP
Torque
● The 3-blade design with thick root and shorter 11-G pitch increases low-RPM torque by ≈ 8% compared to the 12-G model—resulting in quicker hole shots and better acceleration when climbing waves.
● CAMBER + 10° RAKE geometry generates a steady spiral water flow. The engine delivers up to ≈ 86 N·m of usable torque at mid RPM—enough to tow a skier or carry 5 passengers without cavitation.
● CAMBER + 10° RAKE geometry generates a steady spiral water flow. The engine delivers up to ≈ 86 N·m of usable torque at mid RPM—enough to tow a skier or carry 5 passengers without cavitation.
Horsepower Utilisation
● The 11-G pitch allows the engine to operate in its peak power band (5100–4600 rpm), where fuel consumption is up to 10% lower than comparable flat-blade props.
● In short waves or sharp maneuvers, the blades spin steadily up to max RPM without vibration, maintaining smooth thrust.
● Test consumption at 26 mph was measured at 7.7 L/h on average.
● In short waves or sharp maneuvers, the blades spin steadily up to max RPM without vibration, maintaining smooth thrust.
● Test consumption at 26 mph was measured at 7.7 L/h on average.
Flexibility
● Composite alloy with 205 MPa strength and 4% elasticity: the blades flex slightly under minor impact without breaking.
● Hot-Spun Hub with rubber bushing absorbs 65% of torsional shock before it reaches the shaft—resulting in a healthier gearbox and quieter cabin.
● Repairable: if bent, the propeller can be heat-straightened (Prop-Tune) up to three times.
● Hot-Spun Hub with rubber bushing absorbs 65% of torsional shock before it reaches the shaft—resulting in a healthier gearbox and quieter cabin.
● Repairable: if bent, the propeller can be heat-straightened (Prop-Tune) up to three times.
Durability
● Single-layer epoxy coating provides up to 800 hours of salt-spray resistance (ASTM B117 certified).
● In a 150-hour endurance test at 4800 rpm, no pitch loss or surface cracking was observed.
● In a 150-hour endurance test at 4800 rpm, no pitch loss or surface cracking was observed.
Colors & Finish
● Available in marine-grade protective finishes. Details available upon request.
| Recommended Color & Code | Type of Coating & Visual Finish | Suggested Advantage / Application |
|---|---|---|
| Silver Matte | Epoxy powder coating; low light reflection | Matches most fiberglass hulls; hides scratches well |
| Graphite Black | Semi-matte with microcrystal particles | Camouflages on dark transoms; reduces glare |
| Marine Pearl White | Dual-layer pearlescent gloss | Pairs with white hulls; easy salt stain cleanup |
| Navy Blue | Glossy polyurethane coating | Professional look for patrol boats; good underwater visibility |
| Sport Red | Glossy epoxy with UV-resistant pigment | Enhanced safety visibility; ideal for ski & racing boats |
| Aquamarine Green | Semi-transparent metallic overlay | Blends with shallow waters; unique for ecotourism boats |
| Titanium Grey | Hard anodized + clear lacquer | Maximum abrasion resistance; industrial luxury look |
| Solar Gold | Dual-layer metallic powder coating | Eye-catching for exhibitions; reflects warm light |
| Signal Orange | Matte polyurethane, UV-resistant | Best emergency visibility; recommended for rescue teams |
| Thunder Purple | Glossy metallic with dual-tone shimmer | Unique sunlight effect; ideal for custom branding |
Recommended Color & Code:
Silver Matte
Coating Type & Finish:
Epoxy powder coating; low light reflection
Benefit / Suggested Use:
Matches most fiberglass hulls; minimizes visible scratches
Recommended Color & Code:
Graphite Black
Coating Type & Finish:
Semi-matte with microcrystal particles
Benefit / Suggested Use:
Perfect camouflage on dark transom; absorbs light and reduces glare
Recommended Color & Code:
Marine Pearl White
Coating Type & Finish:
Dual-layer pearlescent gloss
Benefit / Suggested Use:
Matches white hulls; easy to clean salt stains
Recommended Color & Code:
Navy Blue
Coating Type & Finish:
Glossy polyurethane coating
Benefit / Suggested Use:
Professional look for patrol boats; better visibility underwater
Recommended Color & Code:
Sport Red
Coating Type & Finish:
Glossy epoxy with UV-resistant pigment
Benefit / Suggested Use:
Increased safety visibility; ideal for ski and racing boats
Recommended Color & Code:
Aquamarine Green
Coating Type & Finish:
Semi-transparent metallic coating
Benefit / Suggested Use:
Blends with shallow waters; unique look for eco-tour boats
Recommended Color & Code:
Titanium Grey
Coating Type & Finish:
Hard anodized + clear lacquer
Benefit / Suggested Use:
Maximum abrasion resistance; premium industrial appearance
Recommended Color & Code:
Solar Gold
Coating Type & Finish:
Dual-layer metallic powder coating
Benefit / Suggested Use:
Eye-catching in exhibitions; reflects warm light
Recommended Color & Code:
Signal Orange
Coating Type & Finish:
Matte UV-resistant polyurethane
Benefit / Suggested Use:
Best emergency visibility; recommended for rescue teams
Recommended Color & Code:
Thunder Purple
Coating Type & Finish:
Metallic gloss with dual-tone spectrum
Benefit / Suggested Use:
Unique sunlit appearance; ideal for custom branding
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